'use strict'
let ul=$('ul')
function btnclick(){
    ul.find('li').remove()
}
function aLinkClick(){
    alert('99999')
}
let aLink=$('#aLink')
aLink.click(aLinkClick)
let my=$('#my')
my.mouseenter(function(){console.log('进来了');})
my.mouseleave(function(){console.log('离开了');})
my.mousemove(function(){console.log('停留了');})
my.hover(function(){console.log('我在哪里');})
let cbxLike=$('#cbxLike')
cbxLike.change(function(e){
    console.log(
        cbxLike[0].checked);
        console.log('我的值改变了');})